Chemistry Questions and Answers

  • Science help!?
  • Science help. I'll give 10 points?
  • Science help?
  • Science Help?
  • SCIENCE HELP? please im desperate...finals are almost here and i don't know alot!?
  • Science Joke!?
  • Science Question! Help!?
  • Science question?
  • Science question?
  • Science Question?
  • Science Question?
  • Science Question?
  • Science questions...arggg?
  • Science Questions.?
  • Science questions?
  • Science questions?
  • Science Questions?
  • Science questions??
  • Science test answers? acids and bases?
  • Science work ....help?
  • Science?!?
  • Scientific notaton?
  • Scince chemical and physical change?
  • Second order rxn (chem II)?
  • Secondary 1 chemistry please help tml got exam easy 10 marks?
  • Secondary refrigerants?
  • See Details Below!?
  • See it in the list of ques of chemistry ,anyone i repeat......?
  • Select the best base to remove a proton from acetylene? NaNh2 Nh3 Naoh NaOCH2CH3?
  • Semipermeable membrane?
  • Semi-solid ice?
  • Separation of mixture?
  • Seperating these elements.?
  • Serious help needed.?
  • Seven diatomic atoms?
  • SF4 has ___ bonding pairs and ___ lone pairs of electrons in the valence shell of the central atom.?
  • Shampoo without Sodium Lauryl Sulphate??
  • Shape and their bond angles,,?
  • Shape of C6H5O? Planar?
  • Shape, structure and bonding in a molecule of Nitrogen dioxide.?
  • Short answer Chem questions! Need help?
  • Short lived isotoped like magnesium -28that are used in fields such as geology agriculture an medicine or..
  • Short questions?
  • Should I conduct this experiment at school?
  • Should I only be using water bottles made with polycarbonate?
  • Show decomposition reaction is first order with respect to H2O2?
  • Show polar bonds by giving partial charges this organic molecule? Whats its functional group?
  • Show the strong bonding between NaCl?
  • Show tree distinc steps: ZnS(s)+2HCI(aq)-ZnCI2(aq)+H2S(I)?
  • Show with calculations what would happen if 10mL of HCl and 10mL of NaOH were added to 40mL of H20 instead of?
  • Show with calculations what would happen if 10mL of HCl and 10mL of NaOH were added to 40mL of H20 instead of?
  • Side chain oxidations of alkylbenzenes with Na2Cr2O7 and H2SO4/H2O will not work if the alkyl side chain is?
  • Sience, Equations?
  • Sigma bonds/Pi bonds?
  • Significant figures in analytical chemistry..could someone help me on this?
  • Significant Figures?
  • Silicon is which type of a solid? Example: ionic, metallic, molecular nonbonding atomic, covelant atomic?
  • Silicon Tetraflouride?
  • Silicone as basis of live?
  • Silicone substitute?
  • Silly Puddy?
  • SIlver Fulminate harvesting?
  • Silver is widely used in jewellery and for tableware...?
  • Silver nitrate forms a colorless solution. so does ammonium nitrate.?
  • Silver nitrate, AgNo3 has a mass of 2.554 grams, how many moles is that?
  • Silver sells for 3.00$/oz, how much is 1.0 Liters of silver worth?
  • Simple Chemistry Quiz Questions for a Class?
  • Simple Convertions...?
  • Simple pH Experiment for a sixth grader?
  • Simple question about reading?
  • Simple questions?
  • Simple science experiments?
  • Simple??
  • Since acids and bases ionize in water, they are good conductors of electricity and are called?
  • Since the soluble hydroxides, such as _____ and ______, are ionic compounds, they are ___% dissociated in wate
  • Sinking gas?
  • Small column chromatography?
  • Smart people? This is about science : ]?
  • Smelly Ester Lab?
  • Smelting Copper?
  • Smelting Copper?
  • So about distilled water...?
  • So can i balance these formulas?[show me the equations]?
  • So confused?
  • So what if sand contains quartz?? how does it help in extraction?
  • So what is harder than Diamond?
  • SO(subscript)2 can be calssified as either an acid anhydride, a base, a base anhydride, or a common ion?
  • So, a strong acid is fully ionised in a solution...?
  • Soap reactions?
  • Soap Chemistry question?
  • Soap properties?
  • Soda V.S. Water Hydration?
  • Sodium Acetate - is it safe?
  • Sodium Benzoate and Ascorbic Acid experiments?
  • Sodium Benzoate?
  • Sodium chloride contains a hygroscopic substance. name it.?
  • Sodium Hydroxide?
  • Sodium sulfate dissolved in water, hetero or homogeneous mixture?
  • Sodium-Nitrate warhead?
  • Soft drink problem.,..!!?
  • Solar System and such...wanna help?
  • Solid NaCl is added to a saturated sodium chloride solution. Write an equation showing the equilibrium between
  • Solid potassium metal will react with Cl2 gas to form ionic potassium chloride.?
  • Solid state chemistry?
  • Solubility Help . . . . .?
  • Solubility and activities?
  • Solubility expressions...?
  • Solubility expressions..?
  • Solubility expressions.?
  • Solubility expressions.?
  • Solubility in water?
  • Solubility of solids in water?
  • Solubility product constants?
  • Solubility Products?
  • Solubility question....help?
  • Solubility questions?
  • Solubility Questions?
  • Solubility Questions?
  • Solubility rules?
  • Solubility?
  • Solubility?
  • Soluble compound? HELP!?
  • Soluble compounds?
  • Solutions and conductivity --------URGENT?
  • Solutions and IMFs?
  • Solutions of iodine ---- urgent?
  • Solutions of strong acids and bases at equilibrium contain a ____ concentration of ions?
  • Solutions of strong acids and bases at equilibrium contain a _______ concentration of ions?
  • Solutions question...?
  • Solutions using density?
  • Solutions-%(w/w) - question 7?
  • Solutions, liquid, solid, gas?
  • Solutions?
  • Solutions-Mole Fraction?
  • Solve by addition?
  • Solve by substitution?
  • Solvent evaporation and humidity problem?
  • Solvents lab?
  • Solving problem?
  • Some chemical reaction?
  • Some Chemistry Equations I Need Help With?
  • Some chemistry q's?
  • Some Chemistry Questions regarding chromatography.?
  • Some chemistry questions..can help me?
  • Some explanation required?
  • Some more quick chemistry questions!?? following...?
  • Some organic chemistry problems....?
  • Some people get skin irritations from nickel in 10 karat gold, why would 18 karat gold be easier for them?
  • Some pH questions?
  • Some Please write me an essay, and i will pay you 10 bucks via paypal?
  • Some Questions On Molecules and Solids Liquids and Gases?
  • Some Questions On Molecules and Solids Liquids and Gases?
  • Someone good in Chemisty.. I really need your help!?
  • Someone I really need help balancing this equation?
  • Someone please help with Biochemistry Question TY!?
  • Someone told me the other day that diesel fuel isn't flammable. Doesn't make any sense, but is it true?
  • Something about chemical bonding?
  • Something about natural milk in terms of chemistry.?
  • Something to lower the freezing point of water?
  • Something unique?!?
  • Someting about Calcite?
  • Soulubilty of acetanilide?
  • Source of error in motility test?
  • Source of m85 in residual gas analysis?
  • Sources of Error?
  • Sp2 hybridization?
  • Spaces in crystal lattices?
  • Spanish Help?
  • Spanish Help?
  • Specific gravity of a 33% (NH4)SO4 solution is 1.1 what mass of (NH4)SO4 would be required to prepare 201mL?
  • Specific heat - heat released?
  • Specific heat capacity is:?
  • Specific heat capacity of mercury?
  • Specific Heat Capacity?
  • Specific Heat of Metal?
  • Specific Heat problem?
  • Specific Heat?
  • Specific Heat?
  • Specific heat-finding final temperature?
  • Spectator ions in the reaction?
  • Spectator ions! help!?
  • Spectral lines of sodium!?
  • Spectrophotometer, can you explain how it works?
  • Spectrophotometric of an acid-base indicator?
  • Spectroscopy, how do you convert from specific extinction coefficient to specific absorption coefficient?
  • Spectrum help, please!?
  • Speed of light question...?
  • Speed Pressure and Density Help?
  • Spin-orbit coupling and relativistic effects?
  • Spontaneous vs nonspontaneous reactions? please HELP!?
  • Stainless steel?
  • Standard enthalphy change?
  • Standard Enthalpy of Formation?
  • Standard Free Energy Change?
  • Standard Heat/ Standard Empalthy...?
  • Standard molar entropy of H2(g)?
  • Standard temperature and pressure are??
  • Standard tempurature pressure?
  • Stannous flouride or tin fluride, SnF2 is an ingrediant of toothpaste that is able decrease tooth decay...?
  • Starting with 142 mL of a 0.31 M solution of phenylalanine, shown above at pH = 7.0, how many mL of a 0.400 M?


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